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Rosa is the cleaner in Gressenheller University and appears in the game Professor Layton and the Last Specter. She is very passionate about her job and she often tells Professor Layton off for not keeping his office neat and tidy.
Rosa wears a mustard shirt, blue dress, white bandana and orange leggings.
Rosa gives the following puzzles in Professor Layton and the Last Specter:
After completing the puzzle Gallon Hat, Rosa gives the course Rosa's Travels for the Train mini-game.
At the start of the game, Rosa can be seen lecturing Professor Layton on how he spends far too much time in his office, researching. She handed him the letter from Clark and offered Layton a cup of tea. After reading the letter, Professor Layton drank the cup of tea fast and dashed out, leaving Rosa looking puzzled.
"The cleaning lady in charge of Gressenheller University's offices, Rosa is highly meticulous and, as such, cannot bear to sit by idly and leave the professor's messy habits unchecked. On the plus side, she makes a smashing cup of tea."